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Subject: minimum bounding circle for a triangle/polygon
Date: Wed, 22 Aug 2007 08:39:28 -0700
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Thread-Topic: minimum bounding circle for a triangle/polygon
Thread-Index: Acfk0eO+jcG7+VBsSQi/vdHmcmu7AQ==
From: "George Pavlov" <gpavlov@mynewplace.com>
To: <pgsql-sql@postgresql.org>
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before i start reinventing the wheel does anyone have handy a function =
(or straight SQL) for calculating the centerpoint coordinates and the =
radius of the minimum bounding circle (not the the circumcircle) of a =
triangle (coordinates of 3 points given as inputs).
=20
a bonus would be a generalization for any polygon, but that's probably =
too much.
=20
thanks in advance!
=20
george

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<HTML dir=3Dltr><HEAD>=0A=
<META http-equiv=3DContent-Type content=3D"text/html; charset=3Dunicode">=0A=
<META content=3D"MSHTML 6.00.6000.16525" name=3DGENERATOR></HEAD>=0A=
<BODY>=0A=
<DIV><FONT face=3D"Courier New" color=3D#000000 size=3D2>before i start =
reinventing the wheel does anyone have handy a function (or straight =
SQL) for calculating the centerpoint coordinates and the radius of the =
minimum bounding circle (not the the circumcircle) of a triangle =
(coordinates of 3 points given as inputs).</FONT></DIV>=0A=
<DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>=0A=
<DIV><FONT face=3D"Courier New" size=3D2>a bonus would be a =
generalization for any polygon, but that's probably too =
much.</FONT></DIV>=0A=
<DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>=0A=
<DIV><FONT face=3D"Courier New" size=3D2>thanks in advance!</FONT></DIV>=0A=
<DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>=0A=
<DIV><FONT face=3D"Courier New" size=3D2>george</FONT></DIV><br/>This =
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